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Seismic characterization of the structural front of southern Quebec Appalachians.

Séjourné, Stephan; Dietrich, James R.; Malo, Michel (2003). Seismic characterization of the structural front of southern Quebec Appalachians. Bulletin of Canadian Petroleum Geology , vol. 51 , nº 1. p. 29-44. DOI: 10.2113/51.1.29.

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Résumé

Interpretation of recent industry seismic reflection data provides important insights into the structural style of the southern Quebec Appalachians structural front, south of Drummondville. Especially, the occurrence of thrusts propagating west of the mapped limit of the parautochthonous domain is widely documented. Extensive décollement planes dominate the structural style east of the Aston Fault and define the soles of tectonic slices stacked into hinterland-dipping duplexes. The Chambly-Fortierville Syncline and Logan’s Line are not imaged seismically. Growth faults were active since the deposition of the Potsdam Group and at least until the deposition of Trenton Group. Normal faults also extend into the overlying molasse and flysch units and antithetic faults are more common than previously documented. Normal faults are crosscut by Appalachian thrusts.

Type de document: Article
Mots-clés libres: allochthons; amplitude; Appalachians; autochthons; basement tectonics; Cambrian; Canada; characterization; contraction; decollement; duplexes; Eastern Canada; elastic waves; extension tectonics; faults; geometry; geophysical methods; geophysical profiles; geophysical surveys; growth faults; normal faults; North America; Paleozoic; petroleum; petroleum exploration; Potsdam Sandstone; Quebec; reflection methods; seismic methods; seismic migration; seismic profiles; structural traps; surveys; tectonics; tectonostratigraphic units; thrust faults; traps; Upper Cambrian; southern Quebec; Aston Fault
Centre: Centre Eau Terre Environnement
Date de dépôt: 08 janv. 2021 16:25
Dernière modification: 08 janv. 2021 16:25
URI: http://espace.inrs.ca/id/eprint/11056

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